Woohoo, bring on the posters! My favorite Wacky posession is a complete set of 1973 test posters and proper 1974 posters, including Cheapios, Weakies and Toadal (one of my favorite Wackys ever).
I do feel gouged by Topps every time they set up chases that make you buy many more boxes than you otherwise would, but that's down to the collector bug.